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Commit 035aa3de authored by Daniel Vetter's avatar Daniel Vetter
Browse files

drm/i915: enable/disable backlight for eDP 



Like we already do for the LVDS panels. This seems to help greatly
in setting up the backlight, since the BIOS might refuse to cooperate.

Reviewed-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
Tested-by: default avatarPaulo Zanoni <paulo.r.zanoni@intel.com>

v2: Move the backlight_off call from panel_off to edp_backlight_off,
noticed by Paulo Zanoni.

Reviewed-by: default avatarPaulo Zanoni <przanoni@gmail.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 82ed61fa

drivers/gpu/drm/i915/intel_dp.c

+5 −0
Original line number Diff line number Diff line
@@ -1164,6 +1164,7 @@ static void ironlake_edp_backlight_on(struct intel_dp *intel_dp) 
{

	struct drm_device *dev = intel_dp->base.base.dev;

	struct drm_i915_private *dev_priv = dev->dev_private;

	int pipe = to_intel_crtc(intel_dp->base.base.crtc)->pipe;

	u32 pp;



	if (!is_edp(intel_dp))
@@ -1181,6 +1182,8 @@ static void ironlake_edp_backlight_on(struct intel_dp *intel_dp) 
	pp |= EDP_BLC_ENABLE;

	I915_WRITE(PCH_PP_CONTROL, pp);

	POSTING_READ(PCH_PP_CONTROL);



	intel_panel_enable_backlight(dev, pipe);

}



static void ironlake_edp_backlight_off(struct intel_dp *intel_dp)
@@ -1192,6 +1195,8 @@ static void ironlake_edp_backlight_off(struct intel_dp *intel_dp) 
	if (!is_edp(intel_dp))

		return;



	intel_panel_disable_backlight(dev);



	DRM_DEBUG_KMS("\n");

	pp = ironlake_get_pp_control(dev_priv);

	pp &= ~EDP_BLC_ENABLE;